Introduction to photoelectric encoding disk

Encoding disk refers to a digital encoder that measures angular displacement. It has the advantages of strong resolving power, high measurement accuracy and reliable work. It is one of the most commonly used displacement sensors for measuring the position of the shaft rotation angle. The code disc is divided into two types: absolute encoder and incremental encoder. The former can directly give the digital code corresponding to the angular position; the latter uses a computing system to make the pulse increment generated by the rotating code disc against a certain reference number addition and subtraction.

Dongguan Hongcheng Optical Products Co., Ltd. encoder code disc materials include glass, film, metal. the glass code discs are corroded on the chrome-plated glass surface with light and dark code channels, which have good thermal stability, high precision, fragility and high cost ; The metal code disc is directly engraved with through and unconnected lines, and it is not fragile, but because the metal is not easy to corrode but easy deform, the accuracy is limited, and its thermal stability is an order of magnitude worse than that of glass; the film code disc is economical, Its cost is low, it is not easy to break and deform, but its accuracy, thermal stability, and life are worse. The resin code disc and the glass code disc are similar in craftsmanship. It also corrodes the chrome plating on the surface of the light and dark resin to show light and dark pulses. High precision and not easy to break, shortcomings are easy to skip code under the harsh environment and high temperature, the price is relatively high, and the processing technology is difficult

The content of the code plate drawing is as follows:

1. Need to attach materials

2. Precision

3. Overall dimension, tolerance, thickness

4. Making effect drawings: the classification of positive and negative boards. (If you consider the price factor, you need to emphasize how many magnifications are allowed to see defects below)

5. Need to provide detailed CAD drawings (drawings are best not to draw scale drawings). The above is the complete information of making the calibration board

Hongcheng Optics can provide glass, film, metal, provide samples, can customize conventional pulse line pairs 256 lines, 500 lines, 1000 lines, 2400 lines, 3600 lines, 5000 lines, etc.

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